my hamster bites -- not aggressively, just for fun or smth? how do i fix this bc it makes me nervous

female syrian. ive had her about a month.

she just bites gently, sometimes blood is drawn. but she never lunges on anything. she just sniffs curiously, bites, and then goes back to her business. i typically move my hand away before she bites. idk why she bites if not as an aggression. she just does it just-because.

how do i fix this -- efficiently and fast.

thanks!