Olfactory problem. And appetite back!

I can't tolerate any spice smell and taste of my home made food especially garlic,onion and kasuri methi.thats why i couldn't able to eat any home made veggie and pulses.Even if i try to eat pulses or veggie ,i usually vomit it out.I am suffering lots of problems in eating.i can't eat literally anything except sweet dishes.i don't even like smell of normal milk .i also felt my taste has been altered somehow.i started like bland food.i was not like this 8-9 months ago .i was a great foodie and spice lover.i don't know why this sudden change happened with me .Even toothpaste flavour tastes different.i don't know what to do.Every doctor here has failed to detect my problem.They just say everything is okk with you.Please help me out doctor.I want my normal taste and appetite back