Keyaki-sama
This is Kawaguchi Hidetoshi. This is my humble answer to the question.
Since the way we perceive and recognize things and things is fundamentally different between the enlightened Buddha and Nyorai, and we, ordinary people, think that they are not being perceived or recognized as we perceive them.
To put it a little more difficult, we see things as reality due to ignorance (fundamental ignorance), where worries such as good or bad, likes and dislikes arise, etc., but in Buddha Nyorai, things and things are captured by emptiness (no entity) present (direct perception) understanding, so it is thought that all manifestations can be captured as clean emptiness (both worldly abandonment and victory). Cleanliness in this case is a different concept from cleaning as the opposite of clean, dirty, and dirty as we usually think, so we need to be careful about that point, but well, even if it smells quite stinky to us, we can think that there is no distress when visited by Shakyamuni, so we can think that there is no discomfort.
Also, in the story of Shakyamuni, there was a story where Lord Anan, who served Shakyamuni and had taken care of his surroundings, at one point, when Shakyamuni ate wheat that had already rotted, Shakyamuni gave the wheat he had eaten to Anan Satoru, and when Anan Slayer ate it, it had a ridiculously delicious taste.
Buddha and Nyorai have various mysterious powers, but as an interpretation of this, even if it is bad for us ordinary people, it can be thought that if it is a Buddha or Nyorai, it means that the food that comes into contact with the tongue has changed deliciously due to the power (in color and transformation) achieved by the Buddha and Nyorai's accumulated blessings (merits).
Maybe for us ordinary people, even if it's a pretty stinky smell, if it's the smell after touching Shakyamuni's nose, it might be a ridiculously good smell.
Kawaguchi Hidetoshi Gassho