Please choose the correct ending to complete the given sentence: Health: [header] How to cope with scent sensitivity [title] Track your triggers. [step] It can be helpful to know what kind of scents bother you. If a particular brand of perfume or laundry detergent causes an adverse reaction, you should know so you can avoid that brand in the future.

Ending1: Keep a journal chronicling when and where you have a bad reaction to a smell. [substeps] It may be hard to identify the precise trigger every time, but try to notice when symptoms arise. Ending2: [substeps] Do your best to keep track of your triggers. For example, if you live in an apartment building, don't just label your laundry smell. Ending3: [substeps] Carry scented scent kits so you can easily easily pinpoint triggers. For example, maybe your family wears perfume from time to time. Ending4: On the other hand, if you find out you prefer a slightly pungent, unscented product, then you may consider leaving out the perfume altogether. [substeps] Reading up on specific perfume scents can help you recognize areas where your natural scent may be triggered more effectively.

Answer format: ending1/ending2/ending3/ending4