How can I get rid of smell in basement?

If it smells musty you just need to keep running a dehumidifier. It can take months but it will work on getting rid of the smell.

Run a dehumidifier and use damp rid

using some activated charcoal will do the trick. Also check for damp areas and do some water proofing

First disgard all the things that traps mold, wash floor and keep windows closed because the causes damp moist smell. A dehumidifier is your best defense on getting it under control and add glade pull ins

It kind of depends on the smell and the cause.

What kind of smells? Did something die down there? I had a chipmunk crawl into my dryer and not knowing he was in the dryer, when I turned it on, he fried. If it's moldy or mildew, you need a dehumidifier.

I personally would get rid of items that may be causing most of the smell, wash the floor and buy a dehumidifier which are on clearance and use glade pull ins