I'm planning to spit on the fruit in the grocery store when I have a cold.
That's really gross. What the heck are you thinking?
I want to make people sick. If the cashier sees it, I don't care.
It is wrong that you want to make others sick by your actions. You never know how this illness could effect others and you could seriously harm them.
But it doesn't matter anyway.
It does matter because you intend to purposely try to make innocent people ill. I don't know what's motivating you to act like this, but you need to see a therapist and find out the answer.