4 year old is getting scared about poison!?

So my daughter is 4 will be 5 in 2 months, she asked me what happens if someone drinks chemicals or poison. i told her that they could die and that is not something anyone should do. Well now she thinks every thing is poison! if her fork falls on table that she saw was just cleaned with a cleaning product she thinks the fork needs to be washed so that she doesn't die from eating poison! And the things go on and on. Soap goes in her mouth while she is taking a shower she will say, 'mommy i feel poison in me.'' So i explain to her that a little soap goes in everyones mouth when they shower...not a big deal! if something goes in her mouth that wasnt suppose to she thinks it is poison and that she is going to die! So now i am explaining to her that those things dont kill people! Any suggestions on how to fix this situation would be helpful.