My new manager, changed shifts about a month ago been with the company a year and half, we had our first one on one and after he accused me of drinking on the job, because I he said I strongly smelled of alcohol though it was 8 hours into a 10 hour shift. I did drink the night before and it was tequila but I was 100% sober.I was lightly sweating in the meeting. He asked if I would prove that I wasn't drinking and I agreed to be tested. A more friendly manager, who I had been working with all morning operating heavy equipment, he was my spotter, the hr person and my manager all watched as I put a test strip under my tongue and it showed I had no alcohol in my system. My manager was upset to be proved wrong and the HR lady shut the meeting down quick when this happened and had me leave the room, finished my shift. Can I come back from this accusation? Should I ask to change to another shift?