I'm going to put real flowers on my stepsister's bonnet because she's allergic to pollen from flowers.
You really won't do this, right?
I'm not telling a joke. I'm sick of her allergies disabling her from enjoying fresh air.
It's wrong that you would do this. You shouldn't purposely make you sister miserable.
She needs fresh air, that's all.
There are many particles in fresh air that are allergens such as pollen. If she is exposed, she could get very sick and could even die.