Using the hepa filter

Today we were driving down the freeway in our new Cybertruck when we came across a lot of smoke from a nearby grass fire. As we have done before in our other Tesla cars, we turned on the bio defense mode to keep the smell of the smoke out. However, as we passed through the smoke, we could definitely still smell it. I also could tell that we didn't seem to have a positive air pressure in the cabin. It was as though the truck was still pulling air from outside.

Has anyone else...

Using the hepa filter