High pitched noise in fuel tank

[Batfink]

My last bike had 33k on it and when I cleaned the tank, it had bits of fingernail sized rusty pieces of metal in the bottom, the filter was black. When I cleaned out the tank and filter she went like a missile. This post reminds me to carry one of those filter funnels you can buy when you pump fuel in the tank, especially riding remote areas , but at the same time I dont want the bike and me to stink of fuel when I store the funnel.

have you tried one of these?

http://www.qualitycycleparts.com/Profill...ra-mk2.htm