If there's a lot of smoke and odor lingering in the air then I suppose that it could interfere with the others who are shooting.
The same can be said for anyone shooting any black powder guns at any range facility.
Black powder shooters often joke about how they create clouds of smoke while others are shooting.
But because everyone is target shooting informally and mostly for recreation, most folks don't consider making clouds of BP smoke to be inconsiderate to the other smokeless shooters.
However, folks who pay money to shoot each round of trap are sometimes shooting more competitively, even if only among themselves or to train for competition. One trap club that I go to hands out a patch for a perfect score which some people really try hard to accomplish during each and every round. And trap shooters will sometimes make side bets among themselves. So shooting trap can be taken much more seriously than simple casual shooting is at any other range.
Not everyone wants to pay up to $10 per round or more including the cost of shells to shoot a round of trap to have to shoot through lingering smoke, or need to wait for smoke to dissipate after each BP shot.
But not everyone feels that it's an inconvenience either.
However it is being respectful to ask the other shooters in advance if they mind if you shoot black powder shells along with them. Someone with a real aversion to it may want to choose to sit out.
Of course each club has its own rules. But if a club doesn't have established rules concerning shooting with black powder, then the range officer in charge of the trap field can simply decide to be arbitrary and not allow it.
Driftwood Johnson makes some good points in that it's important to understand the reasons why in advance.