Yes — from a Jain perspective, wearing a modern mask can be in the spirit of ahimsa, because it may help prevent the inhalation or harm of tiny living beings and also helps protect others from potential harm.

In Jain ethics, the intention matters: if the mask is worn with the भावना of non-violence, caution, and protection of life, it aligns with ahimsa. Using a practical modern means is not against Jain Dharma when it supports carefulness (pramāda-vinaya avoidance), restraint, and protection of living beings.

So the principle is:

• Protect life
• Reduce harm
• Act with awareness and compassion

That is consistent with Jain ahimsa.