No one likes being sick, but sometimes, you just can't stop it. The next time you feel like you need to vomit, try facing straight forward (perhaps using a bucket) to avoid uncomfortable drainage in nasal passages.
Photo by Ryan Hyde
Most people (and, indeed, nearly every TV and movie depiction of the act) use a toilet or a sink when vomiting is necessary. While this makes for quick cleanup, it also requires you to point your face directly downwards. Combined with the upwards flow of your stomach contents, your nasal passages can become affected. Keeping your face upright by using a bucket (or having really, really good aim) can avoid that burning sensation and uncomfortable cleanup. Alternatively, if you don't have a bucket handy or simply can't manage that self control, holding or plugging your nose can help minimise this effect.