Just to let you know- I am a breeder and before I ever send a pup to a new home I am sure to bathe it. Just follow all of the other's advice and do it in a warm room. Might want to pull a warm towel straight from the laundry dryer to wrap him in. I would not suggest blow drying him at such a young age (especially if you've never done it), but by all means the kid needs a bath! You might also want to check to make sure nothing (like food) is caught between his teeth. That can sometimes cause an awful odor around the facial area. Plus it is just good to check his teeth anyway to be sure they are clean
.