Disclosed are devices and method for generation and delivery of a nicotine aerosol to a user. The present invention discloses a device (system), embodying a novel configuration (e.g. parallel configuration) to hold at least one aerosol generating substrate (e.g. tobacco, alkaloid, nicotine and the like) and an aerosol promoting substance (e.g. acid), to generate and deliver the aerosol of a nicotine salt to the user. The present invention provides an efficient, parallel design device that delivers nicotine to the users without burning or heating of tobacco and/or nicotine.