Positives

• Some patients use lavender as one of the core scents in smell-training routines and say it helps give structure to daily smell retraining after post-COVID smell loss. Reddit.

Negatives

• Others say lavender, even if they tolerated it before, now causes instant sinus pressure or headaches. Reddit.

Hurdles & Side Effects

• The biggest practical frustration is that repeated lavender sniffing for weeks does not guarantee any return of smell, even when people are consistent. Reddit.