Hi i have a94 deville and the blower stopped working and a funny smell (like something is burning in dash)What could cause this?

There are several things that may cause those issues - and they are all potentially dangerous ( and labor intensive )!!There could be a bad ground point, burnt or pinched wire, bad relay, poor /corroded connection to the computer, etc. I'm sorry, but this is something that requires a hands on by a knowledgeable technician!
Sorry for the bad news, and thanks for using Fixya!!

yes but if something was getting that hot it should have blown a fuse-you could pick up another unit at a junk yard-cheers Denny

I think you should replace the blower motor and (maybe) the blower motor regulator too.

blower motor burnt up

Could be the blower motor or the blower motor resistor. Take the blower motor out, power it and see if it works, if it does then replace the resistor.

The blower resistor will burn and smell without blowing a fuse

You may want to change the blower motor as a precaution.
Do all the fan speeds work?
If not .....change the fan resistor board which is right beside the fan at the same time you change the blower fan motor.

I would say the blower motor resistor has gone out. The front dash module or the rear one.

sounds like the blower motor has burned out, that would account for the weird smell as u say, the blower motor is on the passenger side under the dash.

The problem is probably the blower motor resistor. I'm not sure where yours is located exactly. They can be on the firewall under the hood or some are near the blower motor under the dash.