You had bunch of ram lambs inside a barn for a few hours. More than enough time to urinate and deficate. Ergo , what you are smelling is ammonia fumes from the urine and feces. When a ram curls his nose, what he is testing for is the estrogen levels of the ewe to see if she is getting ready or is in heat and readiness to be bred.My rams truly hum. A few weeks back I kept a bunch of ram lambs in the barn for a couple of hours before the guy who had bought them came with his trailer. When I opened the door, the smell nearly knocked us over.
Maybe some rams are stinkier than others, but that stink certainly ups many notches as the breeding season approaches (in line with the noticeable increase in 'scrotal girth').
I find the smell of ewes to be pleasant.....rams?....not so much!
It just occurs to me that ram stink may be one of those things that you can either smell or not due to inherited factors (like digesting the dye in beetroots).I honestly don't curl my top lip and point my nose in the air! It would be interesting to hear if other folk find rams very stinky!