Question

What is the smell that you get when you mix salt and baking soda together.

Answer 1

A mixture of salt and baking soda does not have any smell. 

Baking soda or bicarbonate of soda is a deodorizer. It absorbs all the odours. It can be used to neutralize stubborn acidic odours as well as other funky smells. It can also be used to clean materials or surfaces.  

Answer 2

$\huge \tt funky \: \: \: smell$