Why Did I Feel Nauseous, Dizzy, And A Burning Sensation In My Stomach After Exposure To CLR Fumes?

I do cleaning for work. And I opened up a room. And all it smelled like straight away was clr. I instantly started feeling a bubbling burning feeling in my stomach felt dizzy and nearly vomited. I just went straight outside. Why did this happen and why so quickly. Why was it only to me And 4 hours later now still feeling that bubbling feeling and nauseous and lips a bit tingly is there anything that can assist with this Thank you