Without a cover, contaminants can sneak into your drink of water. According to Johnson Arbor, "An open glass is helpless to tainting by dust, germs, or bugs."
"This also includes anything that is drifting or flying in the air more."
According to the Mayo Center, your body digests bugs or "anthropods" quite similarly to other foods, so while it could make you feel nauseous, it might not actually be harmful to your health.
If you've ever chugged a glass of water that was set out for temporary consumption, you may have noticed the subtle difference in flavour.
"Gases in the air, including carbon dioxide, disintegrate in the water at the moment when you leave a glass of water out for the time being," she claims.
Extra water may taste unpleasant since, at the point when carbon dioxide dissolves in water, it entirely transforms into carbonic corrosive.