The Trafic in particular has a separated cabin and the floor of that thing is pretty much one layer of sheet metal between the wheels. You're good on both counts.
It does smell... eh... agricultural inside one of those after a while, of course. It's kinda nostalgic for me at this point.
For the really nasty stuff people here just get a trolley to hook up to a jeep or a tractor and a bit of patience. Or, you know, sealed containers. Trust me, people do haul a lot of smelly stuff and I haven't seen anybody who owns an open bed pickup truck in my life. I know more people who moved stuff around with oxen than with pickup trucks. It works.