Find out which smell triggers the nausea..For me it was making of dal n pulses.. also stay hydrated.. u can; sniff lemon or drink lemon water. For me hardly anything worked so doc had given me doxinate n ondem medicine...

Stay away from odours that make you queasy. Try to find out what triggers the nausea. U can use lemongrass aromatic oil at home also. Keep a lemon with u. Smell it, lick it when ever u feel like. U can also keep a pot pourri sorts of thing from lemon and orange rinds along with some rock salt, near by you. And keep drinking adequate amount of water.

Sniff a lemon in the morning...have lemonade