copd, maintenance
"I have been using spiriva respimat for several months now for Copd.  why is it important not to cover the vents on mouth  piece which i have been doing   ever since i  been using it .  my doctor never told me not to  i just read  about it recently. i really  dont  think that i have been  benefiting from the inhaler  that much. could this be the reason?  i am not covering  the vents any longer  the information i read says not to but  why . maybe people are  using the same as i did  hopefully this will help several people.

                                                                                               thank you"