In order to be absolutely certain without a shadow of a doubt that there is no mold in your home, you need to get a lot better at detecting it all in all. There is a pretty good chance that you have mold in your home without even realizing it, and the fact of the matter is that the best way to ascertain whether or not there is mold inside your house is to familiarize yourself with how it smells. A surprising number of people out there have actually never smelled mold before, which means that they wouldn’t know how to recognize this smell even though it’s so bad for them.
Generally speaking, the smell of mold actually isn’t all that unpleasant. It would have a kind of damp, vegetal smell to it almost like grass. This kind of smell is not common inside homes, so you should be wary if you ever notice anything like this at all. Mold also has an oddly fungal smell to it, and you should ideally try reading MCT | What Does Mold Smell Like? So that you can get an even better idea of how this sort of thing tends to work.
The truth of the situation is that the smell of mold is actually quite distinct. Hence, you can tell quite reliably whether or not there is mold in your house once you have gotten the hang of the smell. Trying to check through other means can also be useful, but suffice it to say that you need a bit more expertise before using these other methods. Following your nose is perhaps the best thing that you can do to discover and get rid of mold.