Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to cope when you feel sick during a dissection [title] Avoid the smell. [step] Formaldehyde is used to preserve specimens. Many students report being adversely affected by the smell of formaldehyde during a dissection.

Ending1: Talk to your physician about cleaning an electronic device that provides odors during a dissection, if your concerns outweigh those of your doctor. [substeps] If you find that you won't be affected by the musty odors during a dissection, purchase music cds to comfort you during a dissection. Ending2: Try breathing through your mouth as much as you can and stepping away from the specimen when you are able. It might also help to wear a mask. Ending3: If your child enters into an dissection before an adult is with them, you should leave the room. [substeps] You should also avoid withdrawing from your child as your child enters the dissection. Ending4: This unpleasant smell lingers for 3 hours after distermination and lasts for five days after dissolution. In order to fight this unpleasant odor, you should avoid it.

Answer format: ending1/ending2/ending3/ending4