The frequency of cleaning your dryer depends on how often you use it. For regular households, it is recommended to clean the lint trap after each load of laundry. Additionally, thorough cleaning of the dryer—lint trap, drum, and exterior—should be done every few months. It's important to pay attention to the vent system as well. Ideally, it should be cleaned at least once a year, or six months if your dryer takes care of huge loads often, or more frequently if you notice reduced drying efficiency.

Condensation in your dryer can create a dangerous situation. It can cause lint to clog up the venting components of the system. If you have a gas-powered dryer, excessive lint buildup can create the potential for carbon dioxide buildup within your home. Clogged vent systems can also be a severe fire hazard. 

A thorough dryer vent cleanout improves efficiency, reduces energy consumption, extends the dryer's life, and decreases fire risk from lint buildup.

If you're dealing with an odor in your dryer that transfers onto your clothes and linens, here's what you can do: start by cleaning the lint trap and drum with warm soapy water. Then wipe down the interior using a mixture of equal parts water and white vinegar to eliminate any lingering odors.

To get rid of odors you can try this method: take a cloth soaked in vinegar and put it inside the dryer. Run the dryer on a heat setting for 15 minutes. Afterward, make sure to dry the drum by running it with some towels. This technique helps eliminate any smells and leaves your dryer smelling nice and fresh.

If the odors remain, you may need to sanitize your dryer or call in a professional house cleaner to handle the job.