Plastic-based toothpaste tubes have traditionally been hard to recycle, with their flexible layers of mixed materials a thorn in the side of council recycling schemes and diligent recyclers alike.
These increase mucus in the sinuses and lead to the slow clearance of fluid by the eustachian tubes. The initial illness will also inflame the nasal passages, throat, and eustachian tubes.
Your throat may send fluid into the eustachian tube, which connects the ears and throat. This tube can then get clogged and interfere with your ears' ability to drain fluid, which causes an earache.