Thankfully my companions are generally smart enough to walk around traps after I avoid them. Even my atronachs and dremora lords have taken up such habits.
Now if only Sofia wasn't bugged to occasionally duke it out with my summoned creatures/quest companions who get caught in her magicstaffobliteration crossfire. Being Imperial, I usually have to bust out the Voice of the Emperor to calm everybody's tits.
"I will feast on your heart!" "You don't stand a chance against me!" "GUYS! Can we save it for when we're done?" O_O "Yes'm."
Lydia was more prone to set off traps and hit me with them, while Farkas usually ends up standing around while I'm moving forward through the dungeon. Then I look around for him, and have to go back to find my big dumb baby <3