M.P.
When you bomb a room or the house, the chemicals land on solid surfaces too. I'd want to wash everything your baby touches.
I've bombed my house in the past but wouldn't do it now because all that has been learned about the effect of those chemicals. I'm surprised that whole house bombs are still available.
I would call the 800 number on the can and ask what they recommend. Seems like in the past they said to keep pets out of the house for 24 hours. But I'm not sure. A baby is small like a pet and less able to deal with chemicals.
Treating the animal with fleas is a much safer way to get rid of fleas if that's the problem. If you have other insect problems look on the Internet for safer ways to deal with them. Investigate various methods to determine the least toxic chemicals or ingredients. You can exterminate with chemicals without bombing. Bombing causes the chemicals to land on all surfaces and thus increases everyone's exposure to them. Just a suggestion for the future.
I've had a cat and a dog for years and treat them with First Shield which I get from the vet. Frontline is another brand. and have not had problems with fleas in my house. I do forget to treat on time and see fleas on my animals but after just a few days with the treatment they are gone.