The fumes in the eyelash glues are usually only until the glue is completely dry. One of the things that causes cyanoacrylates to cure is moisture. When I was using a glue that had a lot of fumes, I would use a misting bottle, and spray a fine mist up above my client's head so it would gently fall on their faces. It would cure the glue almost instantly, and the fumes were a lot less noticeable. I think with clusters there is a lot more glue applied than with singles, and I would be cautious so as not to irritate the eyes any more than necessary. The clients found that the misting was very relaxing. The glue I use now is very quick drying, and does not need to be misted to cure. Most of my clients can open their eyes immediately. That being said, I never do a service with cyanoacrylates and clients eyes open, and I do not do cluster lashes. It is singles only for me. I am convinced that anything less and I am potentially damaging the clients lashes. I have seen it time and time again. Also, taping the lower lashes down does not take long, and there are tapes out there that are not nearly as sticky as 3m micropore. Keep looking... You will find one that isn't as tacky. Good luck in your quest. 