Doing a quick flush of your hoses helps make sure they are primed, and knocks some of the mulm loose that collects in them. I've yet to stop the 'mulm cloud', but flushing them definitely minimizes it.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry