Pugs are generally quiet.
Most small dogs tend to have reputations of having shrill barks and barking at EVERYTHING. Pugs are generally quiet and when they do bark, their bark isn’t shrill and yappy like most lap dogs. Pugs are more likely to snort and sniffle than they are to bark.
One of my tenants has a pug. That dog is so quiet you wouldn’t even know there was a dog in the house. He always seems so happy to see you. A pug would be one of my first choices for a pet.