Pregnancy... When does this smell go away so I can actually eat and not throw up?

With my last I was sick up until about 18 weeks. It went away and then towards the last week a little nausea but it was horrible. I lived on ginger ale and crackers. Ask the dr they can prescribe meds for nausea but not the smell. I could smell everything all the way through but the nausea from it eventually went away. I only had that problem with my girl not with either boy and was told that it could have been due to extra hormone.