Can my plants drink this?

I thought i got rid of all of the robinsons juice cordial, by boiling water and swishing it round the bottle.
Now i am using the bottle, and have noticed that it smells of the tropical flavour previously in it, and it tastes like it aswell ( very slightly). Can this do any damage to the plant, or could it do it some good? I am very anxious to find out because i have been using this bottle for only two days.

You should be ok. Robinson's doesn't contain any hazardous chemicals and it's only microscopic quantities causing the smell anyway.