You can wipe down your clothes and hair and remove some of the smell. They can freshen a musty hotel room. If you are seated on a plane with someone who doesn't use deodorant and thinks showering is optional, it can distract you from the body odor. After you are out of sheets, you can put your dirty laundry in the bag.

Placing dryer sheets in your luggage is a popular "travel hack" used primarily to combat the stale, musty odors that can develop in a closed suitcase during transit. Suitcases are often stored in damp cargo holds or humid hotel closets, and the lack of airflow can cause clean clothes to pick up a "basement" scent. The strong, concentrated fragrance of a dryer sheet acts as a continuous air freshener. Beyond just smelling good, dryer sheets can help neutralize static electricity in your clothing, which is particularly helpful if you are traveling to a dry climate where "static cling" becomes an issue. Some travelers also use them to separate clean clothes from dirty laundry within the same bag, tucking a sheet into the laundry bag to prevent odors from migrating. There is also a common (though scientifically debated) belief that the scent of certain dryer sheets, specifically those containing linalool, can act as a mild deterrent for insects like moths or even bed bugs, providing an extra layer of psychological comfort for travelers staying in varied environments.