Abstract: A filter mask includes an oronasal cup, an inhalation directional cover, and an exhalation diverter body. The oronasal cup encloses a nose and mouth of a user. The oronasal cup is fluidly coupled with a filter. The inhalation directional cover is configured to be joined to the filter. The inhalation directional cover includes an elongated wing portion that is oriented in an inhalation direction that is angled with respect to the center axis of the filter. The exhalation diverter body is fluidly coupled with the oronasal cup. The exhalation diverter body defines an exhalation duct that directs exhaled air out of the oronasal cup along an exhalation direction. The inhalation direction and the exhalation direction are oriented away from a plane of interaction between the user and another person.

Abstract: A system and method for detecting an analyte of interest in a sample is provided. The method includes passing a set of ions obtained from the sample through an ion mobility spectrometer to filter out ions that are not ions of interest and to generate an ion mobility spectrum. A mass spectrum of at least some of the ions is generated using a mass spectrometer. The method also includes determining that the analyte of interest is in the sample when peaks of interest are found in one or more of the ion mobility spectrum and the mass spectrum, and the peaks of interest follow a predetermined pattern of peaks associated with the analyte of interest or are confirmed by ion mobility spectrometry.

Abstract: A filter mask includes an oronasal cup, an inhalation directional cover, and an exhalation diverter body. The oronasal cup encloses a nose and mouth of a user. The oronasal cup is fluidly coupled with a filter. The inhalation directional cover is configured to be joined to the filter. The inhalation directional cover includes an elongated wing portion that is oriented in an inhalation direction that is angled with respect to the center axis of the filter. The exhalation diverter body is fluidly coupled with the oronasal cup. The exhalation diverter body defines an exhalation duct that directs exhaled air out of the oronasal cup along an exhalation direction. The inhalation direction and the exhalation direction are oriented away from a plane of interaction between the user and another person.

Abstract: A system and method for detecting an analyte of interest in a sample is provided. The method includes passing a set of ions obtained from the sample through an ion mobility spectrometer to filter out ions that are not ions of interest and to generate an ion mobility spectrum. A mass spectrum of at least some of the ions is generated using a mass spectrometer. The method also includes determining that the analyte of interest is in the sample when peaks of interest are found in one or more of the ion mobility spectrum and the mass spectrum, and the peaks of interest follow a predetermined pattern of peaks associated with the analyte of interest or are confirmed by ion mobility spectrometry.