--- title: Smells that warn — a lesson of Mova's school · trees and pragmatics description: «Smells that warn», a lesson of the everyday course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Your nose is an early-warning system: it can pick up tiny amounts of some substances in the air long before you can see anything. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Everyday](https://md.mova.elamur.ai/free/en/corpora/school/everyday/) / Smells that warn # Smells that warn Lesson 13 of the everyday course of Mova's primary school: 17 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/everyday/13-smells-that-warn/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/0/) — Your nose is an early-warning system: it can pick up tiny amounts of some substances in the air long before you can see anything. - [1](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/1/) — A smell of smoke can mean something is burning; act on it even if you see no flames. - [2](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/2/) — Natural gas for cooking and heating has no smell of its own, so gas companies add a chemical that smells like rotten eggs, just so people notice a leak. - [3](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/3/) — Spoiled food often smells sour or bad because bacteria and moulds grow in it; but some germs that make you ill give no smell, so a good smell does not prove food is safe. - [4](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/4/) — Example: you walk into a kitchen and smell rotten eggs — do not touch the light switch; leave, and tell an adult from outside. - [5](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/5/) — A family in Boston had a boiler that leaked carbon monoxide, a gas with no smell; they kept getting headaches and feeling sleepy until a carbon monoxide alarm went off and they got out in time. - [7](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/7/) — Natural gas has no smell, so a strong-smelling chemical is added to make leaks noticeable. - [8](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/8/) — Leaking gas smells like rotten eggs. - [10](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/10/) — If you smell gas, do not touch switches; leave the building and call for help from outside. - [11](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/11/) — Hot smoke rises, so in a fire the cleaner air is near the floor. - [12](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/12/) — If you smell smoke, tell an adult at once, and get out if it is not clearly safe. - [14](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/14/) — Spoiled food may smell sour or rotten because bacteria (tiny living things too small to see) and moulds are breaking it down. - [15](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/15/) — Some bacteria that cause food poisoning do not change how food smells or looks. - [16](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/16/) — A safe rule for doubtful food is: when in doubt, throw it out. - [17](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/17/) — After you smell something for a while, your nose gets used to it and you notice it less. - [19](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/19/) — Carbon monoxide has no smell or colour, and it can make people sleepy, sick and even kill them. - [20](https://md.mova.elamur.ai/free/en/corpora/school/everyday/13-smells-that-warn/20/) — A gas leak can explode if a flame or spark lights it. - ← previous: [Sounds that warn](https://md.mova.elamur.ai/free/en/corpora/school/everyday/12-sounds-that-warn/) - next →: [Reading faces and voices](https://md.mova.elamur.ai/free/en/corpora/school/everyday/14-faces-and-voices/) - ↑ back to [Everyday](https://md.mova.elamur.ai/free/en/corpora/school/everyday/)