While a gnat infestation can be annoying and bothersome, it’s not considered a real threat to human health.
Some species of gnats, such as fungus gnats, can damage plants by feeding on their roots, which may lead to stunted growth or even plant death. A gnat infestation can also be a sign of sanitation issues, given gnats’ attraction to decaying organic matter and moisture. Addressing the infestation and eliminating attractants can help maintain a cleaner and more pest-free living environment.