Catrin - my DH is that way and to some extent I am. Very likely she is a germaphobe. There are a lot of us out there. I avoid touching elevator buttons and such like that if I can. If not, I have hand sanitizer in my purse (and bike bag!) I never used to be so OCD about stuff like that, but the proof is in the pudding; I almost NEVER catch a cold.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow