Dear Mary: How do I avoid hugging at a funeral?

Q. I have been double-vaccinated but am especially at risk and, since I know of at least four double-vaccinated people who have still caught the virus, am anxious to avoid being infected myself. So far I have confined my socialising to outdoor events — however a funeral for a much-loved great-uncle looms and among those attending will be some Covid deniers who have not been vaccinated.