Aha! See, you're allergic to that stuff. You're gonna have a reaction. And if you think that I'm gonna be smearing VapoRub all over your chest, think again!

7 seconds sound clip from the Shrek 2 movie soundboard.

You can hear this line at 00:49:03.363 in the Blu-ray version of the movie.

Quote context

[...]

- Happily Ever After Potion. Maximum strength. For you and your true love.

- If one of you drinks this, you both will be fine. Happiness, comfort and beauty divine.

- You both will be fine?

- I guess it means it'll affect Fiona, too.

- Hey, man, this don't feel right. My donkey senses are tingling all over.

- Why don't you drop that jug o' voodoo and let's get out of here.

- It says, Beauty Divine. How bad can it be?

- Aha! See, you're allergic to that stuff. You're gonna have a reaction. And if you think that I'm gonna be smearing VapoRub all over your chest, think again!

- Boss, just in case there is something wrong with the potion, allow me to take the first sip. It would be an honor to lay my life on the line for you.

- Oh, no, no, no. I don't think so. If there's gonna be any animal testing, I'm gonna do it. That's the best friend's job. Now give me that bottle.

(Donkey drinking potion)

- How do you feel?

- I don't feel any different. I look any different?

- You still look like an ass to me.

[...]