I hope you dont panic
When the plunger is pushed down it will force air back into the mouth peice. I can see this being very bad in a panicked situation, especially if the object isn't dislodged the first time. That is, if you remember to start with the plunger in the down position to begin with. You'll have to remember to pull it off the face, push the plunger back down, then put it back on the face to try again. I'm disappointed. The suction doesn't feel very strong either. I was hoping this less expensive version would work, but I have my doubts.
Rating: 3 stars