Why can the Dragon Boat Festival only be said to be healthy, but not happy?

Why should the Dragon Boat Festival say "well-being" instead of "happiness"? It turns out that the Dragon Boat Festival is in long summer (noon), and the weather in May of the lunar calendar is full of viruses and diseases, which has always been regarded as a "bad month" by the ancients and described as "five poisons exhausted". Snakes and insects breed, which are easy to bite, people are easy to get sick, and plagues are easy to spread. Therefore, the main folk customs of the Dragon Boat Festival, including drinking realgar wine, wearing sachets, hanging calamus and wormwood, tying five-color silk thread, hanging a map of five poisons, and hanging a statue of Zhong Kui, have the significance of expelling disasters and plagues and praying for peace and health. The Dragon Boat Festival was an important node for disease prevention and epidemic prevention in ancient times, which is why the greeting of the Dragon Boat Festival is "Dragon Boat Festival Health" instead of "Happy Dragon Boat Festival" ~