A systematic review of 49 imaging studies highlights how COVID-19 affects the human brain. Researchers found widespread structural and functional changes in areas responsible for memory, emotion, and attention, providing insight into enduring neurological symptoms like brain fog.
Same here, although it was so gradual it took me years to notice. Also I can smell some things even if they’re relatively subtle, but only for a second or two. Then nothing at all.
I know that human sense of smell gets used to constant sensation and ignores it. Apparently, mine just does it super quickly. I learned to trust my instincts, because usually the ability to smell something goes away before I notice it consciously and I can’t just smell it again.