Ruby: Sum of Fibonacci odd numbers

What is the sum of all odd numbers in the Fibonnoci sequence that are less than 5000?

class Fibonacci
  def initialize
    @a = 1
    @b = 1
    @total = 0
  end

  # Example #1 uses @instance variables
  # of a class
  def sum_odd(number)
    while @a <= number
      if @a.odd? # Syntactic Sugar
        @total += @a
      end
      @a, @b = @b, @a + @b  
    end
    puts %Q{ Total: #{@total} }
  end  
  
  # Example #2 uses local variables.
  # I wrote this to make it easy
  # to re-write in Javascript or Python
  def sum_even(number)
    a = 1
    b = 1
    total = 0
    while a <= number
      if a % 2 == 0
        total += a
        puts %Q{ Is Even Number }
      else
       puts %Q{ Is Odd Number }
      end
      a, b = b, a + b  
    end
    puts %Q{ Total: #{total} }
  end
  
end

fib = Fibonacci.new
fib.sum_odd(5000)