Ambarsaria ji,
I think carbon filters are not the same as carbon compounds released from burning clarified butter.
Now I am actually not interested in the health benefits as much. I am more interested in psychological and spiritual benefits, and I am more interested in the tradition itself. As you know traditions are very important e.g. Tying a turban is a tradition, and a very important one. A turban serves little in terms of utility (protects from heat and cold but so does a cap, looks cool and different) but it's importance becomes crystal clear because of the tradition behind it! Traditions are also valuable as they carry with them the wisdom of the past. If we look into the traditions, then we can see the wisdom. We should not be quick to break away from traditions without careful thought and respect. By respecting traditions as adults we teach newer generations to respect the system we set up to guide them.
Now I have already talked about the psychological and spiritual value. It is important to interact with nature. Not nature through some technological barrier (e.g. heating/cooling systems, artificial light) but nature as it is of it's own accord. Nature is energy, nature is vitality, nature is freedom. It is important to have a lived experience of nature by touching, smelling, seeing, hearing, interacting in other ways. Why is interacting with nature important? Gyani ji and I have already talked about how when we look into ourselves, there is a shift and we find that we are nature. Similarly, when we look deeply into nature, when we attentively interact with it through our 5 senses, we find nature is us. (These shifts in thought are uncommon but do happen). Agni then becomes agni dev, agni as a divine man! Those who do not know agni through their five senses and those who do not know agni as themselves, do not know agni dev. Similar to how we can say that those who do not know the guru, do not know gurudev.
ਗੁਰਦੇਵ ਸਤਿਗੁਰੁ ਪਾਰਬ੍ਰਹਮੁ ਪਰਮੇਸਰੁ ਗੁਰਦੇਵ ਨਾਨਕ ਹਰਿ ਨਮਸਕਰਾ ॥੧॥
गुरदेव सतिगुरु पारब्रहमु परमेसरु गुरदेव नानक हरि नमसकरा ॥१॥
Gurḏev saṯgur pārbarahm parmesar gurḏev Nānak har namaskarā. ||1||
The Divine Guru is the True Guru, the Supreme Lord God, the Transcendent Lord; Nanak bows in humble reverence to the Lord, the Divine Guru. ||1||
pg 250
One might think it is ridiculous for Guru Arjan Dev ji to suggest such a thing that guru is ਬ੍ਰਹਮੁ, the Ultimate Reality. However, I think that Guru Arjan Dev ji has looked deeply into guru and gurbani and found the Ultimate Reality through it. Guru and Gurbani are just forms. Clearly, we should be concerned with the painter not the painting as Bhagat Kabir says. But it is through the forms we find the formless. It is through the painting that we come to know the painter. The painter is a painter because of the painting.
Enough rambling. Cheers