While ethylene is great for ripening some fruits, the gas can cause premature decay of other fruits and vegetables that are sensitive to it.  To avoid deterioration or rapid ripening of sensitive foods, you should avoid storing them too close together with products that emit a great deal of ethylene gas.  Damaged or older fruits generate increased levels of ethylene, so remove injured produce right away.  If you only have one cooler, keep lids on storage boxes, store sensitive items as far away as possible from ethylene producers, and rotate product properly.  If your inventory turns quickly, ethylene should not cause quality problems.