The answer to 'are silverfish dangerous' is no, silverfish are not dangerous to humans. Silverfish are small, wingless insects that feed primarily on carbohydrates, starches, and sugars found in household items like paper, clothing, and glue. While they can be a nuisance and cause minor damage, they do not bite, sting, or transmit diseases to people.
Silverfish are nocturnal and prefer damp, dark environments like bathrooms, attics, and basements. They are generally harmless, but large infestations can lead to damage to household items. If you have a significant silverfish problem, it's best to contact a professional pest control technician to properly identify and treat the issue.