A firefighter warned his wife about exhaust fans in the bathroom, which he calls a “house burner” because of the amount of fires it causes. There’s no escaping the mind-numbing trends and videos on TikTok, but if you use the app correctly, you could be provided with expert advice free of charge. If you don’t use Gen Z’s favorite app, how are you to know about the dangerous pan lying dormant in your cupboard? Bathroom fans are a fire waiting to happenTikTok’s Jess (@unhingedreviewswjess) is married to a firefighter of 17 years who recently told her about the overlooked feature in your home that…