We have been closely following the story of injuries and deaths caused by vaping. Though the reason for this is not definitely known, research points to the use of liquid filled cartridges in electronic vaporizers; i.e. vape pens and e-cigs.
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The Lotus is designed for use with flowers or concentrates and does not use liquid filled cartridges.
Until more is known about this rash of injuries, we recommend not using the Lotus with concentrates. Vaporizers that use flowers (the Lotus and others) have been on the market for years without these issues appearing.
I am not a doctor and am not making any recommendations, but looking at the history of vaporizers, I think that dry herb or flower vaporizers do not cause the injuries seen.
Be safe and use your best judgement about what you put in your body.