2late2be is referring to the fact that your sense of taste is heavily influenced by your sense of smell.
We actually did this in high school; we ate an orange while smelling lavender.
Basically no, we didn’t end up with a taste of lavender, but we did end up not being able to taste the orange particularly well.
While your sense of smell doesn’t dictate your sense of taste, it does heavily support it. Hence, people who lose their sense of smell in one way or another often report that they cannot distinguish taste quite as well as they used to.
Try it for yourself.