Don't freak the poor guy out. The baby will not spontaneously combust if introduced to unnecessary bacteria. The more dirt and cat hair and dog hair little ones are exposed too at a young age, the less likely they will be to have ashma or allergies later in life. You want to avoid people, especially during RSV season.
That being said, I have three kids (11,7 and 2) and as far as a fishroom goes, try to make your tanks understocked. That way you can let them go a little bit and when you do get around to water changes, you will be ok. You still need your fish and something non baby and work related or you will go nuts.
This, exactly.
I didn't really child proof anything. The key is not to leave the really dangerous stuff lying around, not to make your house a padded cell.
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