My pug puppy stinks real bad

Hi all, I need help. I'm a first time dog owner, and I'm not willing to lower my standards of a clean smelling home. So I'm here for some advice.

I have a pug puppy, he's 4 months old. Do puppies usually smell bad and eventually gets better?

I have tiled floors throughout the home, no carpets. I do have an air purifier running by his room and also a robot cleaner to clean the house daily. I work from from, so the windows are also always open as well. However, his room still smells.

Do y'all have any tips to keep the odour under control?