No smell and no taste. Lost my smell.

Hi Doctor, It's been 7 days now that I have absolutely no smell because of which I have no taste. I can only tell if the food is salty sweet or sour, apart from that I have no taste. I am not sure if I have cough because whenever I blow my nose nothing much comes out, but my voice is heavier. I have mild headache where my nostrils and eyebrow section pains and stretches. I can feel absolutely okay except for few times when I feel very tired. But, because of NOOOO SMELL it's very suffocating. Please suggest until when I will be able to regain my smell back and what all to do. I have been taking steam and warm water with turmeric sometimes kadha also. It's the first time that I have lost my smell. Thank you in advance :)