So don't be greedy and cheap. At first glance, this kind of cup is of low quality and heavy plastic taste, which means releasing toxic substances. Long-term drinking will affect your health. If you are still filial to your parents, you can buy a better one, like a NONJ-J health cup or a teacup, or you can buy an ordinary thermos cup. This smell is too strong for you to drink water. You can keep it.