| When exposed to air for extended periods of time, fats become rancid and develop an unpleasant taste and odor. |
| Butyric acid is responsible not only for the smell of rancid butter, but also contributes to the odor of sweat. |
| A yellow variety which stains water and has a faint odor is adulterated with the horned-poppy. |
| Removing manure from the building to an outdoor storage can also reduce odor and gas accumulations. |
| By the third day the acetous fermentation had begun in all of them, and in a few more days each emitted an offensive odor. |
| At room temperature, formaldehyde is an extremely reactive colorless gas with a suffocating odor. |
