Hello Doctor, Why Are Ants Getting In My Bath Towel?

Hello doctor,
Why are ants getting in my bath towel? In the past few days ants started to get into my towel but my mom's towel doesn't have ants even if it is close to mine. I change my towel everytime. It happens once 2yrs ago and it stops then now its happening again. Ants don't get into my shirt or underwear, that's why i'm confused. I don't know what is happening to me or to my towel. Please answer what is going on. What should i do?