I've noticed lately that when I turn the heat on in the van and select the "feet only" option, that I don't feel much heat coming from below and I still do feel some heat coming from the front dash. Is this normal?

Also, when I turn the heat on to the max 5, after a while I sense a slight smell of something. Is this normal?

Please help since I can't recall if I was experiencing the same things last winterand I'm not sure if the vehcile requires repair.