Fresh flax seed oil tastes like pure shite, mix it with something, my favorite is tuna, milk, sardines, jalapenos and a couple helpings of flax seed, for extra protein I'll add some bubblegum flavored yogurt to the mix, now we're talking.
I've taken flax since I was a little girl. My uncle is a chiropractor and suggested that my mom give it to us a long time ago. So I'm used to it.
My uncle's kids can take straight fish oil too. If it's in caps they chew them. Yuck. They've done it since they were tiny though so they think nothing of it.