No, the smell of the plants won't hurt anyone. Some people are sensitive to handling the plants when harvesting them or doing maintenance, especially when in full flowering mode. Air born pollen is not an issue unless you have any male plants that bloom and release pollen_cannabis male plants have the "flowers" and the female plants have the receptors_ the calyx_ where if pollenated seeds will form. Unless you want to breed plants you don't want that to happen.
If you're going to use Ono make sure you DO NOT use it in the same room you have your plants in_ or it will completely ruin the taste, fragrance, etc. Even if you use it in an adjacent room make sure your grow room is completely closed off and that the smell (of the Ono) is completely gone before opening the grow room door. That would be for the spray. If you use the canisters only use them in adjacent rooms and don't let any of that air into the grow room.
Congratulations on the soon to be birth of your child_those moments will be with me always!
Cheers!