Can I put a little baking soda in my TT toilet?

Thanks. I have no clue how to do that or what a tank vent is....I'm not stupid, just uneducated in tt's. :) Plus, mine didn't come with the owners manual, so I have to order one.
The DH will be home next Fri, and I'll get him to check it. We're expecting winter weather ALL dern week here,so I closed up the slide out today and unplugged it from the house. It's gonna just have to smell this week.