Vitamin Deficiencies
Loss of taste and smell could be your body’s way of telling you you’re low in vitamins. Certain conditions and medications can cause you to be low in vitamins associated with smell and taste, like A, B6, B12, and zinc. It can be a chicken-egg situation, too: If you eat less because you can’t smell or taste anything, your body may not get vitamins it needs.
I lost mine in 2020 It returned in a couple weeks.
Horrible for trying to cook
Find the cause and it can be fixed

Thanks Arba

'Time' will restore your senses. - I lost mine in fall of 2019...It came back but I don't recall how long--I mentioned it to my doctor but he just stared

Thanks Connie