Mold spores come from outside. Simply, yes you can transfer it from one place to another. However, mold spores are everywhere and you shouldn’t be panicking about it. When air testing for mold spores, it is not a simple yes or no whether or not you have mold. It is a comparison of the outside air and the inside area. If your inside is higher than outside, you have a mold problem. Certain molds are worse than others and immediately raise concern while others are ignored. If you have visible growth it is a concern for sure. Best practice is to fix leaking appliances/water supply lines and keep air flowing in your house.
**Not official advice, though I am a water/fire/mold remediation professional.
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