1 | Smoking in confined areas can cause fires. | |
2 | I was scared of confined spaces and especially the dark. | |
3 | As a precaution, put them in an airtight freezer bag. | |
4 | Grab an airtight container and plant your flour in the refrigerator. | |
5 | Ventilation can help reduce the level of pollutants in closed rooms, the researchers said. |