Answer:
b. use a wafting motion.
Explanation:
While in the lab, it is very important to remember that some chemicals can be dangerous. When we smell a chemical, we run the risk of damaging our mucous membranes or our lungs. The right way to smell chemicals to avoid risk is by cupping your hand above the container and using a wafting motion. Moreover, if the instructions are to only use a chemical inside a fume hood, make sure that you do not use it anywhere else.
