My Domestic Boss is trying to get me to trash my current Salomon 4D GTXs, after I had to put a chest tube in a guy this week, and about a half-liter of some nasty exudate gushed out onto my pants/boots. I dropped the pants in the hospital laundry, and washed off the boots, but she's pretty concerned about the potential Biohazard.
And I'm pushing back on trashing them... because I love these boots.
If you are forced to change, I'd recommend the 5.11 XPRT 3.0 boots. Very similar fit and feel to the Salomon 4D GTX and have eVent lining which 5.11 claims is BBP protective as well as waterproof. I love my Salomon 4Ds for wet-weather wear but I find I am wearing the 5.11s more and more often. I've not been a fan of 5.11s other footwear iterations but these, so far, rock.