I have a shop in my attic for some of my hobbies and it get s very hot in the summer.
Hot attic smell.
Sealing up your building envelope is the only way to go.
I have large attic with ridge vents and screened vents at either end of the attic to maintain air flow.
Microbial volatile organic compounds mvoc are stinky gasses produced by attic mold.
The unpleasant odor can also attach itself to items stored in the attic.
And infiltrate the airr in the duct even though it s not running.
The musty mold odor can creep down from your attic and take up residence in other areas of your home.
It might be you have a gap or air leak in the returrn air duct that is allowing this smell to get into ductwork.
Depending on the particular type of mold its mvoc may exhibit a damp musky odor.
A little sealing up in the attic will do wonders.
Such odors may even make the items or clothing you re storing in your attic smell as well.
I live in northern virginia hot humid climate in the summer and use heat pumps to heat and cool my house throughout the year.
Step 1 wear a pair of rubber gloves safety goggles a long sleeved shirt and pants to protect yourself from mold and its spores.
Musty dirty animal and moldy smells in an attic create an unpleasant surprise when you go up to this easily overlooked space in the house.
Rodent droppings urine.
This is a combination of lumber insulation shingles all getting cooked in this hot attic air.