First of all I want to clarify that I've never had any problems with migraines or sinus infections (And even if I've had a sinus infection I have never experienced this before.) This past week I have had extreme highs and lows mood wise, Angry outbursts, serious depression and bouts of crying, stress and emotional turmoil.. On thursday afternoon I started smelling this very intense cigarette smoke smell in my living room, Nobody in my house is a smoker, Nobody has ever smoked in this house.. I have neighbors that smoke so I thought it might have been just the smell from them smoking seeping in through cracks in the doors/windows.. It eventually went away after I woke up from my nap but then later on that night I smelled it more and more, My brother and mom can not smell this..

It doesn't only smell like cigarette smoke, It burns the back of my throat and stings my eyes as if someone is really blowing smoke right into my face.. It's really freaking me out because people keep saying it can be a very bad sign of a serious illness.. what is wrong with me?