Maya, there is nothing disgusting about enjoying a green tea latte or spiking smoothies with antioxidant rich matcha. There are traditional ways to make specific teas and enjoy them & they are great guidelines for introducing yourself to vatious types of tea. I firmly believe that the right way to prepare tea is the way you enjoy drinking it.
Now, the matter of what kind of matcha to add to your smoothies. You would not want to add a high grade matcha to a smoothie. The higher the grade the more complex and often subtle the flavors. When using matcha as an ingredient in a beverage or food you want bold, strait forward taste. That is something you will get from a lower grade or cooking grade matcha. Luckily, these grades are less expensive, so you can use them liberally in smoothies or ice cream, soup, salad dressing...let your imagination go wild here.
While I can whisk a beautiful frothy bowl of matcha with the best of them, instead of plain water being my hydration choice of the day, I shake up matcha, ice and water then sip on that all day. Kind of disgusting looking, but delicious and refreshing.