Filling nasolabial folds without affecting smile?

Hi @INMM. I recommend consulting with a facial plastic surgeon to discuss your goals and the best treatment options tailored to your aesthetic goals.

Best of luck,

Dr. Nima

Thank you for your question. Aging process and early volume loss is different in every individual. The nasolabial folds are just a  symptom, but the problem can be elsewhere such as temple or cheeks. Examining your face along with your old photographs or video can help both you and your physician about the best approach. Consider moderate correction with reversible/ temporary  hyaluronic acid based fillers such as Vollure, Resty Refine or Define and always keep smiling.
Best of luck
Dr. Shanthala

My first recommendation is to see a plastic surgeon who can see you in person and evaluate you so that recommendations are more in line with what you need. 
However, given your description, fillers can certainly help with your prominent nasolabial folds. Different fillers are most commonly used in different areas of the face to help with symmetry, volume and contour. You can certainly use a Hyaluronic acid product like Juvederm for your nasolabial folds but sometimes what works better is filling your malar area with a product like Voluma to give you a more rejuvenated look of your cheeks while decreasing the prominence of your nasolabial folds. 
These products are certainly not the only ones but can serve as an example of different things that can be done to achieve your goals. Good luck. 
Best wishes, 
Dr. Suzette Miranda