That doesn’t mean, though, that a negative test result means you’re totally in the clear.
How you dispose of the test itself can make a major difference.
Some tests were made with a toxic substance called sodium azide (viaUSA Today).

The chemical is found in the liquid that you mix your nasal swab into.
Even if the substance simply touches your skin or eyes, you may experience pain and irritated skin.
Using gloves when taking your test can give you an extra level of protection during the process.

