What is this smell coming from my car?

[khandelwal]

There is bad smell in my car and it has been there for a week now. Where is this smell coming from and how can i get rid of it.

[JeepDxb]

If its like damp air smell, then AC filter need change.

If smell is like fuel gas or exhaust gas, then check for manifold leak or fuel pump leak. I am not sure what type of smell you are referring to.