When should you waft a chemical?

When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.

Explanation:

Have A Wonderful Day !!

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.