An Intelligent Electronic Nose for the assistance of Anosmic-Patients

Anosmic people's inability to detect any odors almost always results in unfavorable outcomes. Failure to identify gas leaks or dangerous substances is seen as a threat to their safety. However, as a result of the COVID-19 Pandemic, the number of anosmic patients is steadily increasing. In this paper we propose a system assists anosmic patients in recognizing hazards that they cannot smell. This revolutionary system detects gas leaks, smoke, and early fires, as well as dangerous substances, automatically. With the aid of an array of gas sensors and different machine learning algorithms the, E-nose can identify six distinct smells. At last, if any hazardous gas spread occurs, the system fires alert message specifics the identified gas or event. We succeeded in achieving F1-score of 98 % for Support Vector Machine (SVM), logistic regression, and Decision Tree. While K-nearest Neighbors and Random Forest scored 100%.

I. Introduction

Anosmia is a permanent or temporary absence of smell.[1] It is widely assumed that olfactory deficit reduces food sat-isfaction, affects food interactions, and increases the risk of household disasters. Every second of their lives, anosmic patients are at risk of suffocation due to different gases that may seep into their houses. These gases might include liquefied petroleum gas, natural gas, and carbon monoxide. If any of these gases were to seep into their houses, it may result in death. Because of their poor sense of smell, patients may be poisoned by rotting foods or chemicals. The construction of the electronic nose could help them overcome these threats, so they can feel equal to an ordinary human being. Congenital anosmia patients presently have no therapeutic options. It is common to experience olfactory impairment. According to population estimates, 19.1 % of individuals have a loss of smell, with the figure rising to 80% in patients over the age of 75. According to population estimates, 19.1 % of people have a loss of smell, with patients over the age of 75 having a loss of smell up to 80%. Furthermore, a meta-analysis found that the overall prevalence of altered sense of smell or taste after COVID-19 infection is 47%, ranging between 31 % and 67% in severe and mild-to-moderate symptomatic individuals, respectively. The loss of smell and taste occurred before other symptoms in 20% of cases and was present in 28% [2].