Re: Quit my job due to Emetophobia.....
In the US at least, it's illegal for a past employer to say anything to someone calling for a reference that would make it so you wouldn't get the job. Basically, they are only supposed to confirm that you worked at that location at the dates you provided. If it came up though, you could say that they were trying to get you to clean a biohazard and did not have proper safety measures in place, or something. Mostly true.
As far as why one might get sick at a pharmacy -- My husband's mom told me once that she had to stop at the pharmacy to pick up antibiotics for my husband's brother on the way back from the doctor. He had strep throat, and they lived far out in the country, so it wasn't an option to drive back home and drop him off and come back out, especially because she had no one to watch him at home! She said whenever he had strep, he'd v*, and he wasn't looking good after the car ride and the doctor's visit. The pharmacist said it would be a 45 minute wait to make up his antibiotics. She explained her son was sick, and they said the couldn't rush it cause they did them in order. Then she asked if they had a bathroom because her son might v*, and they said it was for employees only. So she asked if they had a bucket or trash can and they said no. She said she found a plastic bag and had him sit there with the bag until the Rx was made up. I don't know if he v* or not, but that'd be a situation wherein one might be ill in a pharmacy (though not for his Mom's lack of trying to secure appropriate facilities for him!!). She wrote a letter to the pharmacy though and got the policy changed so if you're there with a sick kid you get top priority!!
"I'm not supposed to be like this, but it's okay" -- The Wrong Child, R.E.M.