most types of flowers are not edible. well, most of them are harmless, but very few are actually used for consumption. except for the pain, the taste of the flowers were most affect people's least favorite thing about their disease.
tamaki had daisy flowers. he was lucky. daisies are edible. they were fairly tasteless, like most flowers, but at least they weren't bitter and bad tasting.
he spent a lot of time tasting his petals. he saw [name] so often that he couldn't help but feel so enamored at times that he wouldn't even have to cough for them to crawl up his throat and passed his lips.
to tamaki, the taste of the flowers was not actually the taste of the flowers. his flowers tasted like blood and...
regret sorrow anxiety
chalk.
he was pretty used to the taste.