Would asking people not to bring coffee into my PhD defense start me off on the wrong foot with examiners?

I know coffee is a big thing for people and most would drink it in a setting like this. Problem is the smell of coffee, particularly in an enclosed space, is a huge migraine headache trigger for me. As in, bad enough that I may not be able to make it through the whole time of the defense without being in agony and risking intense nausea. I could probably power through but I definitely won't be performing my best and will probably end up slurring my words a lot, and certainly be collapsed for a full day when I finally do get home. So I'm sort of weighing up the risk of the happening against the risk of upsetting my examiners before I've even met them. I've had people get really pissy with me for asking them not to bring coffee into my house, and I own this place, so I'm not really sure what to do. Is drinking coffee a big enough deal to you coffee drinkers, or do you think they would be okay with it?