there is really no "average time". most people with sinusitis do not have any loss of taste or smell but for those that do it can take several days. to several weeks. or even longer for those senses to return. as much as we would like to predict outcome healing time is so variable in humans that it would be impossible.
average time it takes a person to regain smell and taste after a sinus infection? . i have done inhaling steam warm saltwater up my nose taken over the counter decongestants warm rag over my face the whole nine yards it's been four days so far and nothing has helped this is the longest i've ever been without smelling or tasting