I agree with scanty above. The first looks like dust, the second like water vapor. 'orbs' can also be pollen, moisture in the air...lots of other things that show up on camera. Real orbs aren't necessarily paranormal, they're collections of energy and usually can be seen with the naked eye as they give off their own light. Nice pics though, especially the second one.
Edit: The second one could also be breath fogging in the cold air, someone smoking. etc. Don't give up! Keep trying.