Do air purifiers effectively clean the air?

I bought a Levoit Core 200S air purifier. I noticed the air in my room felt nice to breathe. Was I just being too careful?

Hi Leeland. No, you were not. This variety of air filters is designed to theoretically eliminate a minimum of 99.97% of airborne particles that are 0.3 microns in size, encompassing a range of particulates such as dust, pollen, mold, and bacteria.