You work in a scientific facility. Someone is conducting experiments and you hear a "pop" noise and the crash of glass in the adjoining room. As you approach the lab door, you notice a foul smell coming from under the door and hear your co$-$working calling for help. What should you do next?

Group of answer choices

Break down the door immediately.

Call $911.$

Try to figure out if there is anyone in the room.

Provide First Aid.