How do I clean the inside of the dryer to remove odors?

Are the odors from wet clothes sitting or something else?

I don't think I've ever cleaned the inside of my dryer. I would say vinegar water diluted 1:1 to remove odors.

Never heard of bad oder from dryer. Could something be burning?

Inside of your dryer should not have an odor. Do you have any idea what might cause this? Humid climate? Poor ventilation in the room? Clogged vent hoses? Wipe out the interior with a vinegar water solution or rubbing alcohol. See if these tips help.

https://www.bhg.com/homekeeping/laundry-linens/products/clothes-dryer-care/

https://m.wikihow.com/Clean-a-Dryer-Drum

https://www.bobvila.com/articles/how-to-clean-a-dryer/

Tennis balls shirked in good smell

Should not have an odor. I would say the exhaust pipe or vent is clogged with lint and restricting the air.

I bought the dryer used and I have already cleaned it several times. It came with the smell.