You misunderstood. I said that by giving them a flu shot, I could legally give them epinephrine. I do not wander my store holding two syringes looking to diagnose people. This would typically be in the case of someone who came to the pharmacy and informed me of their situation. One (true) example of such a person was a young child gasping for air while apologizing to his mother who was holding a half eaten snickers and the mom informed us of his peanut allergy. I would feel more comfortable with the risk of an adverse effect from giving them an epipen than the risk of watching a mother watch her son die while we waited for EMS. I was still an intern when that happened, so my pharmacist dealt with it. But as a professional I need to be prepared for that to happen to me. Also, I wouldn't intend to "pretend their breathing problems were caused by the flu shot" as my protocol doesn't require that the epinephrine be given to those having allergic reactions caused by the flu shot. Only that they have received an immunization and afterward had a life-threatening allergic reaction. It's called a "loophole". A Loophole is where one can follow the letter of the law to accomplish something not intended by the lawmakers.