It can be contemptuous and thereby adventurous.  However, it’s hard to label a snort as “high”.

• 01.095 Gloin speaking: ‘Humph!’ (or some snort more or less like that).
• 12.072 Revenge!’ he snorted,
• 12.103 Barrel-rider!’ he snorted.
• 16.019 and in the middle of his snort he sneezed loudly,
• 16.019 Servant, indeed!’ snorted Bilbo;