My house smells of doggy!! Does anyone use an air purifier?

[CrazyBabies]

Hi, I have a beautiful 13 month old Beagel, but I am paranoid my house smells.
2 of my children asked what the horrible smell was when they came in from school, and my sister commented on the doggy smell yest.
I wash bedding, mop the floors etc all the time!
I am thinking of getting an air purifier or dehumidifier, but don't know where to begin.
Please help me make my home smell better.

[WeAllHaveWings]

Does he have a good diet? Our lab stinks when he eats foods with fish in. You could try changing his food?